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Re: Concrete Slab on Grade

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Gentlemen

Most specs that i've worked with stipulates a slab-on-grade laid over a damp proof membrane(mostly polyethylene sheeting) which in turn is placed over a 150 mm (6-in) thick compacted granular fill over a compacted subgrade.

SYED FAIZ AHMAD; MENGG, MASCE
SENIOR STRUCTURAL ENGINEER
SAUDI OGER LTD
RIYADH, SAUDI ARABIA.
From: "george simmon" <george_simmon(--nospam--at)hotmail.com>
Reply-To: seaint(--nospam--at)seaint.org
To: seaint(--nospam--at)seaint.org
Subject: Concrete Slab on Grade
Date: Fri, 06 Jul 2001 15:52:46 -0000

Hello Everyboby!

I am in need of your valuable opinions on supposedly a simple question.
Do you provide sand/polyethylene under a ground supported concrete floor
slab,  or do you provide compacted subbase material?  When should each be
used?  What are the pros and cons of each?
Thanks a million in advance.
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